Vulnerability-Lookup

GHSA-542G-6JP4-66MQ

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-05-28 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status()

When media GT is disabled via configfs, there is no allocation for media_gt, which is kept as NULL. In such scenario, intel_hdcp_gsc_check_status() results in a kernel pagefault error due to &gt->uc.gsc being evaluated as an invalid memory address.

Fix that by introducing a NULL check on media_gt and bailing out early if so.

While at it, also drop the NULL check for gsc, since it can't be NULL if media_gt is not NULL.

v2: - Get address for gsc only after checking that gt is not NULL. (Shuicheng) - Drop the NULL check for gsc. (Shuicheng) v3: - Add "Fixes" and "Cc: " tags. (Matt)

(cherry picked from commit bfaf87e84ca3ca3f6e275f9ae56da47a8b55ffd1)

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46216"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:37Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status()\n\nWhen media GT is disabled via configfs, there is no allocation for\nmedia_gt, which is kept as NULL.  In such scenario,\nintel_hdcp_gsc_check_status() results in a kernel pagefault error due to\n\u0026gt-\u003euc.gsc being evaluated as an invalid memory address.\n\nFix that by introducing a NULL check on media_gt and bailing out early\nif so.\n\nWhile at it, also drop the NULL check for gsc, since it can\u0027t be NULL if\nmedia_gt is not NULL.\n\nv2:\n  - Get address for gsc only after checking that gt is not NULL.\n    (Shuicheng)\n  - Drop the NULL check for gsc. (Shuicheng)\nv3:\n  - Add \"Fixes\" and \"Cc: \u003cstable...\u003e\" tags. (Matt)\n\n(cherry picked from commit bfaf87e84ca3ca3f6e275f9ae56da47a8b55ffd1)",
  "id": "GHSA-542g-6jp4-66mq",
  "modified": "2026-05-28T12:30:33Z",
  "published": "2026-05-28T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46216"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60a1e131a811b68703da58fd805ab359b704ab03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8ab4b47edf4578dbfbe5e95817107a514fa34cc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46216 (GCVE-0-2026-46216)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:40 – Updated: 2026-05-28 09:40

Title

drm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status() When media GT is disabled via configfs, there is no allocation for media_gt, which is kept as NULL. In such scenario, intel_hdcp_gsc_check_status() results in a kernel pagefault error due to &gt->uc.gsc being evaluated as an invalid memory address. Fix that by introducing a NULL check on media_gt and bailing out early if so. While at it, also drop the NULL check for gsc, since it can't be NULL if media_gt is not NULL. v2: - Get address for gsc only after checking that gt is not NULL. (Shuicheng) - Drop the NULL check for gsc. (Shuicheng) v3: - Add "Fixes" and "Cc: <stable...>" tags. (Matt) (cherry picked from commit bfaf87e84ca3ca3f6e275f9ae56da47a8b55ffd1)

Severity

No CVSS data available.

Assigner

Linux

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d8ab4b47edf4578db…
https://git.kernel.org/stable/c/60a1e131a811b6870…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4af50beb4e0f9e6aed9cd53436c099f1dba826f1 , < d8ab4b47edf4578dbfbe5e95817107a514fa34cc (git) Affected: 4af50beb4e0f9e6aed9cd53436c099f1dba826f1 , < 60a1e131a811b68703da58fd805ab359b704ab03 (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 7.0.9 , ≤ 7.0.* (semver) Unaffected: 7.1-rc3 , ≤ * (original_commit_for_fix)

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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/gpu/drm/xe/display/xe_hdcp_gsc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d8ab4b47edf4578dbfbe5e95817107a514fa34cc",
              "status": "affected",
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "4af50beb4e0f9e6aed9cd53436c099f1dba826f1",
              "versionType": "git"
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/display/xe_hdcp_gsc.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "7.1-rc3",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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              "cpeMatch": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status()\n\nWhen media GT is disabled via configfs, there is no allocation for\nmedia_gt, which is kept as NULL.  In such scenario,\nintel_hdcp_gsc_check_status() results in a kernel pagefault error due to\n\u0026gt-\u003euc.gsc being evaluated as an invalid memory address.\n\nFix that by introducing a NULL check on media_gt and bailing out early\nif so.\n\nWhile at it, also drop the NULL check for gsc, since it can\u0027t be NULL if\nmedia_gt is not NULL.\n\nv2:\n  - Get address for gsc only after checking that gt is not NULL.\n    (Shuicheng)\n  - Drop the NULL check for gsc. (Shuicheng)\nv3:\n  - Add \"Fixes\" and \"Cc: \u003cstable...\u003e\" tags. (Matt)\n\n(cherry picked from commit bfaf87e84ca3ca3f6e275f9ae56da47a8b55ffd1)"
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    "datePublished": "2026-05-28T09:40:32.891Z",
    "dateReserved": "2026-05-13T15:03:33.105Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-542G-6JP4-66MQ

CVE-2026-46216 (GCVE-0-2026-46216)

Tags

Sightings

Nomenclature